f disease over yourself. In the unyielding
will is health. In the weak, vacillating, fearful mind is disease and
death. At the same time always be in perfect magnetic trim with the
physical laws of health. A knowledge of the latter and the ascension of a
fearless mental attitude will open up hitherto unrecognised channels of
physical and mental expression. Physiological researches have led sincere
investigators to the inevitable conclusion that there is subtle, refined,
dynamic substance, a reality that binds up the reorganization, causes
growth, vitality and motion; repairs injuries; makes up losses; overcomes
and cures diseases. Von Helment called it "Archeus"; Stahl called it
"Anima;" Whytt called it the "sentiment principle;" Dr. Cullen called it
"Caloric;" Dr. Darwin called it "Sensorial energy"; Rush called it
"Occult cause;" and many other names such as "Vital Principle," "Living
power," "Conservative Power," "Odic Force," etc., etc., have been given
to it. We of India have recognised it and devised Yoga methods for
controlling it; we call it Prana and only in India do you come across men
who possess pranic control or control over universal energy.

There exists in your physical organism reserve stores of vital energy
stored away for your use, particularly in that central ganglion of your
vital battery known as the Solar Plexus and generally in the chain of
ganglia or storage batteries along and up your spine and elsewhere in
other nerve-centres. The solar plexus is also known as the Abdominal
Brain and your brain depends and draws upon this vital centre for its
energies. You will find after the prolonged concentration and brain-work
that this part of your body--at the back of pit of stomach--becomes
warm. Now when you engage in physical exercise, for instance, you must
have noticed how at first you soon get tired and all done up. But if you
wait a little and then start again, you will find how the sense of
fatigue has quite passed away and you can run your body under full
pressure for a very long time, and the more you exert yourself the
greater and more powerful the surging up of your vital energy. With each
new exertion you seem to acquire a fresh start. This has puzzled
physiologists. You will find a parallel phenomenon in mental work. You
may experience a sense of weariness and fatigue in some brain-work which
demands close thinking and attention, but if you attack your work a
little later after the first eff